Pressure Support Ventilation - A New Triggered Venilation Mode for Neonates

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Bild 14: Häufigkeitsverteilung der Inspirationszeit bei 4 Frühgeborenen, die im PSV-Modus
beatmet wurden. Der orangefarbene Balken zeigt die maximale Inspirationszeit, vorgegeben
durch die Einstellung am Beatmungsgerät.
showed a reduction in weaning time using PTV instead of IMV. [35]
Dimitriou et al found a shorter time of weaning using A/C in comparison to
SIMV at low rates. [51] Jarreau et al demonstrated that PTV modifies the
pattern of breathing by reduction of respiratory rate and decreases the WOB.
[34] Donn et al compared IMV to PSV in a study of 30 preterm newborns
(weight 1280 + 100 g, gest. age 29.5+1 wk.). They showed that patients
treated with PSV were weaned more rapidly and had a significantly shorter
mean time to extubation than those treated with conventional IMV. [39]
6.2.4 PSV IS BETTER THAN A/C!
Assist/Control is not Pressure Support Ventilation (PSV). During A/C,
pressure is controlled, and each respiratory effort is assisted as in PSV.
However, during A/C, inspiratory time is fixed by ventilator setting. During
PSV, inspiratory time is adapted to the spontaneous inspiration of the
patient. This prevents air trapping and inversion of the inspiratory /